Swift：填充自动释放非可变指针<；NSDictionary？>；
我使用DTCoreText将HTML转换为属性文本。因为我想在前面设置字体，而不是在后面，因为那样会覆盖所有粗体、斜体等标记，所以我想在构造函数中设置文档属性。这个构造器想让我给出一个或多或少像是NSDictionary的AutoReleasingUnsafemtablePointer？前面有&个。某种程度上。只是它不允许我以任何方式设置它。我试过。内存，试过以任何可能的方式转换字典，但它不接受任何数据Swift：填充自动释放非可变指针<；NSDictionary？>；,swift,ios8,dtcoretext,Swift,Ios8,Dtcoretext,我使用DTCoreText将HTML转换为属性文本。因为我想在前面设置字体，而不是在后面，因为那样会覆盖所有粗体、斜体等标记，所以我想在构造函数中设置文档属性。这个构造器想让我给出一个或多或少像是NSDictionary的AutoReleasingUnsafemtablePointer？前面有&个。某种程度上。只是它不允许我以任何方式设置它。我试过。内存，试过以任何可能的方式转换字典，但它不接受任何数据 let font = UIFont.systemFontOfSize(12)
let font = UIFont.systemFontOfSize(12)
let data = info.desc?.dataUsingEncoding(NSUTF8StringEncoding)
let attributes: NSMutableDictionary? = NSMutableDictionary()
attributes!.setObject(font, forKey: NSFontAttributeName)
var attributeRef: AutoreleasingUnsafeMutablePointer<NSDictionary?> = AutoreleasingUnsafeMutablePointer.null()
NSMutableAttributedString(HTMLData: data, documentAttributes: nil)
//attributeRef = *attributeDict
let attributedString = NSMutableAttributedString(HTMLData: data, documentAttributes:attributeRef)
let paragraphStyle: NSMutableParagraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineBreakMode = NSLineBreakMode.ByWordWrapping;
let range = NSMakeRange(0, attributedString.length)
attributedString.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: range)
lblMessage.attributedText = attributedString
let font=UIFont.systemFontOfSize（12）
让数据=info.desc？.dataUsingEncoding（NSUTF8StringEncoding）
let属性：NSMutableDictionary？=NSMutableDictionary（）
属性！。setObject（字体，forKey:NSFontAttributeName）
var attributeRef:autoreleasingusafmtablepointer=autoreleasingusafmtablepointer.null（）
NSMutableAttributeString（HTMLData:data，DocumentAttribute:nil）
//attributeRef=*attributeDict
让attributedString=NSMutableAttributedString（HTMLData:data，documentAttributes:attributeRef）
让paragraphStyle:NSMutableParagraphStyle=NSMutableParagraphStyle（）
paragraphStyle.lineBreakMode=NSLineBreakMode.ByWordWrapping；
let range=NSMakeRange（0，attributedString.length）
attributedString.addAttribute（NSParagraphStyleAttributeName，值：paragraphStyle，范围：range）
lblMessage.attributedText=attributedString
var dict=NSDictionary？（）&dictlet s = "<html><body><h1>Howdy</h1><p>Hello</p></body></html>"
let d = s.dataUsingEncoding(NSUTF16StringEncoding, allowLossyConversion: false)
var dict = NSDictionary?()
let att = NSAttributedString(data: d!, options: [
NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType
], documentAttributes: &dict, error: nil)
println(att!)
println(dict!)
但是，我通常通过
nilvar dict=NSDictionary？（）&dictlet s = "<html><body><h1>Howdy</h1><p>Hello</p></body></html>"
let d = s.dataUsingEncoding(NSUTF16StringEncoding, allowLossyConversion: false)
var dict = NSDictionary?()
let att = NSAttributedString(data: d!, options: [
NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType
], documentAttributes: &dict, error: nil)
println(att!)
println(dict!)
但是，我通常通过
nilextension String {
/// Convert HTML to NSAttributedString
func convertHtml() -> NSAttributedString {
guard let data = data(using: .utf8) else { return NSAttributedString() }
if let attributedString = try? NSAttributedString(data: data, options: [.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil) {
let string = NSMutableAttributedString(attributedString: attributedString)
// Apply text color
string.addAttributes([.foregroundColor: UIColor.text], range: NSRange(location: 0, length: attributedString.length))
// Update fonts
let regularFont = UIFont(name: Fonts.Regular, size: 13)! // DEFAULT FONT (REGUALR)
let boldFont = UIFont(name: Fonts.Bold, size: 13)! // BOLD FONT
/// add other fonts if you have them
string.enumerateAttribute(.font, in: NSMakeRange(0, attributedString.length), options: NSAttributedString.EnumerationOptions(rawValue: 0), using: { (value, range, stop) -> Void in
/// Update to our font
// Bold font
if let oldFont = value as? UIFont, oldFont.fontName.lowercased().contains("bold") {
string.removeAttribute(.font, range: range)
string.addAttribute(.font, value: boldFont, range: range)
}
// Default font
else {
string.addAttribute(.font, value: regularFont, range: range)
}
})
return string
}
return NSAttributedString()
}
}
要更新生成的HTML中的字体，请使用与以下类似的代码： Swift 5
extension String {
/// Convert HTML to NSAttributedString
func convertHtml() -> NSAttributedString {
guard let data = data(using: .utf8) else { return NSAttributedString() }
if let attributedString = try? NSAttributedString(data: data, options: [.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil) {
let string = NSMutableAttributedString(attributedString: attributedString)
// Apply text color
string.addAttributes([.foregroundColor: UIColor.text], range: NSRange(location: 0, length: attributedString.length))
// Update fonts
let regularFont = UIFont(name: Fonts.Regular, size: 13)! // DEFAULT FONT (REGUALR)
let boldFont = UIFont(name: Fonts.Bold, size: 13)! // BOLD FONT
/// add other fonts if you have them
string.enumerateAttribute(.font, in: NSMakeRange(0, attributedString.length), options: NSAttributedString.EnumerationOptions(rawValue: 0), using: { (value, range, stop) -> Void in
/// Update to our font
// Bold font
if let oldFont = value as? UIFont, oldFont.fontName.lowercased().contains("bold") {
string.removeAttribute(.font, range: range)
string.addAttribute(.font, value: boldFont, range: range)
}
// Default font
else {
string.addAttribute(.font, value: regularFont, range: range)
}
})
return string
}
return NSAttributedString()
}
}
您是否知道不再需要DTCoreText？iOS现在可以让你直接将HTML转换为NSAttributedString。谢谢matt！不幸的是，本机调用仍然需要相同的AutoreleasingUnsafemtablepointer：（只需说
var dict=NSDictionary？（）&dictnilvar dict=NSDictionary？（）&dictnilNSAttributedStringNSAttributedString自动删除非对称指针NSAttributedStringNSAttributedString自动删除非对称指针。